1. #1
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    Question [SOLVED] Probleme with the example Direct TreeLoader

    [SOLVED] Probleme with the example Direct TreeLoader


    I am new in ExtJS (It's my first try), perhaps someone can help me


    first the 2 files that I make some modification :


    direct-tree.js
    Code:
    Ext.onReady
    (
        function()
        {
            
            Ext.Direct.addProvider(Ext.app.REMOTING_API);
    
            var tree = new Ext.tree.TreePanel
            (
                {
                    autoScroll: true,
                    renderTo: document.getElementById('menu_cadre_arbre'),
                    animate: true, //lol
    
                    root: {
                        expanded:true,
                        useArrows: false,
                        id: 'n.1', //.1.1.9.101.438
                        text: '<a href="index.php?page=ddd#ee"><b>Estrildidae</b></a>',
                                listeners: {
                click: function(n) {
                    Ext.Msg.alert('Navigation Tree Click', 'You clicked: "' + n.attributes.text + '"');
                }
            }
    
                        
                    },
                    
                    loader: 
                    new Ext.tree.TreeLoader
                    (
                        {
                            preloadChilren: true,
                            directFn: TestAction.getTree
                        }
                    ),
                }
                
            );
            
            
            tree.getRootNode().reload();
            //createNode: 'n.1.1.1.9.101.438',
        
        
        return true;
    
        }
    
    );
    TestAction.php (only 10 values whasn't enough for me)
    PHP Code:
    <?php



    class TestAction
    {
       
        
        function 
    doEcho($data){
            return 
    $data;
        }

        function 
    multiply($num){
            if(!
    is_numeric($num)){
                throw new 
    Exception('Call to multiply with a value that is not a number');
            }
            return 
    $num*8;
        }

        function 
    getTree($id)
        {
            include 
    "/media/usbdisk/www/species/config.php";
            include 
    "/media/usbdisk/www/species/class/sql.lib.php";
            
            
    $out = array();
            
            
    $arbo explode(".",$id);
            
    $NbArbo count($arbo)-1;
            
            
            switch (
    $NbArbo)
            {
                case 
    1:
                                
                    
    $sql "select * from SpeciesKingdom order by ScientificName";
                    
    $res sql::sql_query($sql);

                    
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    $ob->ScientificName ucwords(strtolower($ob->ScientificName));
                        
                        
    array_push($out, array(
                            
    'id'=>'n.1.'.$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                        
                    }
                break;
                
                case 
    2:
                {
                    
                    
    $sql "select * from SpeciesPhylum where IdSpeciesKingdom = '".$arbo[2]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                    }
                }
                case 
    3:
                    
                    
    $sql "select * from SpeciesClass where IdSpeciesPhylum = '".$arbo[3]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                    
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                    }
                break;
                case 
    4:
                    
    $sql "select * from SpeciesOrder where IdSpeciesClass = '".$arbo[4]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                    }
                case 
    5:
                
                    
    $sql "select * from SpeciesFamily where IdSpeciesOrder = '".$arbo[5]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                    
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                    }
                break;
                
                
                case 
    6:
                    
    $sql "select * from SpeciesGenus where IdSpeciesFamily = '".$arbo[6]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                    
                    while (
    $ob mysql_fetch_object($res))
                    {
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>$ob->ScientificName,
                            
    'leaf'=>false
                        
    ));
                    }
                break;
                
                case 
    7:
                
                    
    $sql "select * from SpeciesMain where IdSpeciesGenus = '".$arbo[7]."' order by ScientificName";
                    
    $res sql::sql_query($sql);
                    
                    while (
    $ob mysql_fetch_object($res))
                    {
                    
                        
    array_push($out, array(
                            
    'id'=>$id.".".$ob->Id,
                            
    'text'=>"<a href=\"onClick:ajax();\">".$ob->ScientificName."</a>",
                            
    'leaf'=>true
                        
    ));
                        
                    }
                break;
            }
            return 
    $out;
        }
    }


    ?>
    I tried different option that I can see in the documentation and the examples but I must say some difficulty to implement them.


    so I have 3 questions :

    I would use :
    preloadChilren (I hope it's when one user clic on a node we preload all this chidren and not all the children of my tree)

    createNode (I think it's this option)
    I want to display my tree at start in special configuration

    the last (the most important)

    How can I make a link with 'leaf'=>true (I think ext catch all the events before sent to navigator)
    Last edited by Aurélien LEQUOY; 24 Dec 2010 at 6:08 AM. Reason: solved

  2. #2
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    I'm not a PHP programmer. Can you post the data that your PHP page generates (e.g. using copy&paste from the Firebug Net tab)?

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    Exclamation no

    no


    No, the problem is not with PHP, I just put the code that I produce because the example was not enough for me.

    I replaced 'n112' by 'n.1.1.9.15.156.15478' like that i can make an explode/split on the string to know where I am on the tree, anyway the problem is not here.


    I am new with Ext js and not so good with js and my problem is how produce the code JS to do that :

    Create a node : to show the tree in a special configuration (like it's will be if i clic on one folder)

    Preload the data of each (folder) children when somebody click on a folder.


    Or if i can find an example with all this options.

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    Post


    I would be glad if somebody can help me, how to use preloadChilren & createNode ?

    thank you


    Aurélien LEQUOY

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    nobody have one idea about that ?

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    up

  7. #7
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    You didn't get an answer, because your question isn't clear enough.

    Try to explain (with more detail) what you are trying to accomplish...

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    I just wanna open the tree with a path.


    at start we have :

    1-- title 1
    |- item1
    |- item2
    |- item3
    |- item4
    ...

    I would have sothing like that



    1-- title 1
    |- item1
    | |- subitem1
    | |- text
    |- item2
    |- item3
    |- item4
    ...

  9. #9
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    Either have your server return the tree with that particular node expanded and with children or call expandPath to have the tree load and expand the required nodes.

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    finally I found the solution with the example :


    Code:
    tree.expandPath("/root/n3/n33");  
    //don't forget first "/"
    
    //or to focus one elemenet :
    tree.selectPath("/root/n3/n33");
    I think, it's will be better to propose one example to each function to know how to use them, most of time I have to read the code of framwork to know how to use this function.



    I would have one example with php, i mean by that one example of json to return to js, to know to implemente with many node.


    Now I am looking for the function to select automatically one item when the tree is expanded.

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